static int wcstools_radec2pixelxy(const struct WorldCoor* wcs,
double ra, double dec,
double* px, double* py) {
int offscl;
wcs2pix(wcs, ra, dec, px, py, &offscl);
return offscl;
}
/**
* Function: radec_to_ij
* Returns the detector pixel coordinates corresponding to the
* point radec in the sky sgiven the WCS wcs.
*
* Parameter:
* @param wcs a pointer to a WorldCoor WCS structure
* @param radec a point with celestial coordinates
*
* Return:
* @return a pointer to a d_point structure containing the image
* pixel coordinates.
*/
d_point *
radec_to_ij (struct WorldCoor * wcs, sky_coord radec)
{
d_point *pos;
int offscl;
pos = malloc (sizeof (d_point));
wcs2pix (wcs, radec.ra, radec.dec, &pos->x, &pos->y, &offscl);
return pos;
}
int main(int argc, char **argv)
{
int i;
Fun fun;
struct WorldCoor *wcs; /* WCS info */
double x,y,ra,dec,xr,yr;
if(argc == 1){
fprintf(stderr, "usage: twcs iname\n");
exit(1);
}
/* open Funtools file */
/* Funopen makes initial WCS library call: wcs = wcsinit(header_string) */
if( !(fun = FunOpen(argv[1], "r ", NULL)) ){
fprintf(stderr, "ERROR can't open file: %s\n", argv[1]);
exit(1);
}
/* get wcs structure */
FunInfoGet(fun,FUN_WCS,&wcs,0);
if( !wcs || !iswcs(wcs) ){
fprintf(stderr,"No WCS data");
return(1);
}
/* read input, convert pixels to wcs and back */
while(1){
fprintf(stdout,"\nInput x y: ");
if(scanf("%lf %lf", &x, &y) != EOF){
if(x <= -999)
break;
/* convert image pixels to sky coords */
pix2wcs(wcs, x, y, &ra, &dec);
fprintf(stdout,"Convert from pixels to ra,dec using pix2wcs()\n");
fprintf(stdout, "x=%.10g y=%.10g -> ra=%.10g dec=%.10g\n",
x, y, ra, dec);
/* convert sky coords to image pixels */
fprintf(stdout,"Convert from ra,dec -> pixels using wcs2pix()\n");
wcs2pix(wcs, ra, dec, &xr, &yr, &i);
fprintf(stdout, "ra=%.10g dec=%.10g -> x=%.10g y=%.10g offscale=%d\n",
ra, dec, xr, yr, i);
}
else
break;
}
/* clean up */
/* FunClose makes final WCS library call: wcsfree(wcs) */
FunClose(fun);
return(0);
}
/* convert pixels to wcs and return string */
char *wcs2pixstr(int n, double ra, double dec){
Info info = getinfo(n);
char str[SZ_LINE];
double xpix, ypix;
int offscale;
if( info->wcs ){
wcs2pix(info->wcs, ra, dec, &xpix, &ypix, &offscale);
// convert to 1-indexed image coords
snprintf(str, SZ_LINE-1, "%.3f %.3f", xpix+1, ypix+1);
nowhite(str, info->str);
return info->str;
} else {
return NULL;
}
}
///////////////////////////////////////////////////////////////////////////////
// calculates and returns the input pixel coordinates of the outut
// coordinates xOut / yOut
PixelCoord PixToPix::CalcInPixels(double xOut, double yOut)
{
double xPos, yPos; // sky coordinates
double xIn, yIn;
int offscl = 0;
pix2wcs(m_outWcs, xOut, yOut, &xPos, &yPos);
gal2fk5(&xPos, &yPos);
wcs2pix(m_inWcs, xPos, yPos, &xIn, &yIn, &offscl);
return PixelCoord(xIn, yIn, true);
}
///////////////////////////////////////////////////////////////////////////////
// calculates and returns the output pixel coordinates of the input
// coordinates xIn / yIn
// PixelCoord.m_valid is set to false if the coordinates outside of the
// of the output area
PixelCoord PixToPix::CalcOutPixels(double xIn, double yIn)
{
double xPos, yPos; // sky coordinates
double xOut, yOut;
bool valid = true;
int offscl = 0;
/* Pixels in fits images don't start at 0, but 1. C images start at 0...*/
pix2wcs(m_inWcs, xIn, yIn, &xPos, &yPos);
/* Now, xPos and yPos are in equatorial (ie, RA, DEC).
This is because this is what our input is in, ie, if you have something not
integral this won't work */
/* Convert to Glactic */
fk52gal(&xPos,&yPos);
// test if we are inside the current sky area
if (yPos < m_lowB || yPos > m_highB)
valid = false;
if (m_lowL < m_highL)
{
// normal case
if (xPos < m_lowL || xPos > m_highL)
valid = false;
}
else
{
// we crossed the 0/360 line
if (xPos < m_lowL && xPos > m_highL)
valid = false;
}
if (valid)
{
wcs2pix(m_outWcs, xPos, yPos, &xOut, &yOut, &offscl);
if (offscl) valid = false;
}
return PixelCoord(xOut, yOut, valid);
}
int readTemplate(char *filename)
{
int i;
FILE *fp;
char line[MAXSTR];
char *header[2];
int sys;
double epoch;
double x, y;
double ix, iy;
double xpos, ypos;
int offscl;
header[0] = malloc(32768);
header[1] = (char *)NULL;
/********************************************************/
/* Open the template file, read and parse all the lines */
/********************************************************/
fp = fopen(filename, "r");
if(fp == (FILE *)NULL)
printError("Template file not found");
while(1)
{
if(fgets(line, MAXSTR, fp) == (char *)NULL)
break;
if(line[strlen(line)-1] == '\n')
line[strlen(line)-1] = '\0';
if(debug >= 2)
{
printf("Template line: [%s]\n", line);
fflush(stdout);
}
for(i=strlen(line); i<80; ++i)
line[i] = ' ';
line[80] = '\0';
strcat(header[0], line);
parseLine(line);
}
if(debug >= 2)
{
printf("\nheader ----------------------------------------\n");
printf("%s\n", header[0]);
printf("-----------------------------------------------\n\n");
}
/****************************************/
/* Initialize the WCS transform library */
/****************************************/
output.wcs = wcsinit(header[0]);
if(output.wcs == (struct WorldCoor *)NULL)
{
printf("[struct stat=\"ERROR\", msg=\"Output wcsinit() failed.\"]\n");
exit(0);
}
/* Kludge to get around bug in WCS library: */
/* 360 degrees sometimes added to pixel coord */
ix = 0.5;
iy = 0.5;
offscl = 0;
pix2wcs(output.wcs, ix, iy, &xpos, &ypos);
wcs2pix(output.wcs, xpos, ypos, &x, &y, &offscl);
xcorrection = x-ix;
ycorrection = y-iy;
/*************************************/
/* Set up the coordinate transform */
/*************************************/
if(output.wcs->syswcs == WCS_J2000)
{
sys = EQUJ;
epoch = 2000.;
if(output.wcs->equinox == 1950.)
epoch = 1950;
}
else if(output.wcs->syswcs == WCS_B1950)
{
sys = EQUB;
epoch = 1950.;
if(output.wcs->equinox == 2000.)
epoch = 2000;
}
else if(output.wcs->syswcs == WCS_GALACTIC)
{
sys = GAL;
epoch = 2000.;
}
else if(output.wcs->syswcs == WCS_ECLIPTIC)
{
sys = ECLJ;
epoch = 2000.;
if(output.wcs->equinox == 1950.)
{
sys = ECLB;
epoch = 1950.;
}
}
else
{
sys = EQUJ;
epoch = 2000.;
}
output.sys = sys;
output.epoch = epoch;
free(header[0]);
return 0;
}
int main(int argc, char **argv)
{
int i, j, l, m, c, count, ismag, ncol;
int dl, dm, width, haveFlux, isImg, csys;
int side, ibegin, iend, nstep, useCenter;
int racol, deccol, fluxcol;
int ra1col, dec1col;
int ra2col, dec2col;
int ra3col, dec3col;
int ra4col, dec4col;
long fpixel, nelements;
double rac, decc;
double ra[4], dec[4];
double x, y, z;
double x0, y0, z0;
double x1, y1, z1;
double oxpix, oypix, equinox;
int offscl;
double ilon;
double ilat;
double pixscale, len, sideLength, dtr;
double offset;
double xn, yn, zn;
double ran, decn;
double sina, cosa;
double sind, cosd;
double a11, a12, a13;
double a21, a22, a23;
double a31, a32, a33;
double x0p, y0p, z0p;
double x1p, y1p, z1p;
double lon0, lon1;
double xp, yp;
double lon;
double pixel_value;
double weights[5][5];
double weights3[5][5] = {{0.0, 0.0, 0.0, 0.0, 0.0},
{0.0, 0.1, 0.2, 0.1, 0.0},
{0.0, 0.2, 1.0, 0.2, 0.0},
{0.0, 0.1, 0.2, 0.1, 0.0},
{0.0, 0.0, 0.0, 0.0, 0.0}};
double weights5[5][5] = {{0.0, 0.1, 0.2, 0.1, 0.0},
{0.1, 0.3, 0.5, 0.3, 0.1},
{0.2, 0.5, 1.0, 0.5, 0.2},
{0.1, 0.3, 0.5, 0.3, 0.1},
{0.0, 0.1, 0.2, 0.1, 0.0}};
double **data;
int status = 0;
char input_file [MAXSTR];
char colname [MAXSTR];
char output_file [MAXSTR];
char template_file[MAXSTR];
int bitpix = DOUBLE_IMG;
long naxis = 2;
double sumweights;
double refmag;
dtr = atan(1.0)/45.;
/***************************************/
/* Process the command-line parameters */
/***************************************/
ismag = 0;
opterr = 0;
useCenter = 0;
strcpy(colname, "");
while ((c = getopt(argc, argv, "pm:d:w:c:")) != EOF)
{
switch (c)
{
case 'm':
ismag = 1;
refmag = atof(optarg);
break;
case 'd':
debug = debugCheck(optarg);
break;
case 'w':
width = atoi(optarg);
break;
case 'c':
strcpy(colname, optarg);
break;
case 'p':
useCenter = 1;
break;
default:
printf("[struct stat=\"ERROR\", msg=\"Usage: %s [-c column][-m refmag][-d level][-w size] in.tbl out.fits hdr.template\"]\n", argv[0]);
exit(1);
break;
}
}
if (argc - optind < 3)
{
printf("[struct stat=\"ERROR\", msg=\"Usage: %s [-c column][-m refmag][-d level][-w size] in.tbl out.fits hdr.template\"]\n", argv[0]);
exit(1);
}
strcpy(input_file, argv[optind]);
strcpy(output_file, argv[optind+1]);
strcpy(template_file, argv[optind+2]);
if(debug >= 1)
{
printf("input_file = [%s]\n", input_file);
printf("colname = [%s]\n", colname);
printf("output_file = [%s]\n", output_file);
printf("template_file = [%s]\n", template_file);
printf("width = %d\n", width);
printf("ismag = %d\n", ismag);
fflush(stdout);
}
/********************************************/
/* Set the weights for spreading the points */
/********************************************/
sumweights = 0.;
for(i=0; i<5; ++i)
{
for(j=0; j<5; ++j)
{
if(width == 3)
sumweights += weights3[i][j];
else if(width == 5)
sumweights += weights5[i][j];
}
}
for(i=0; i<5; ++i)
{
for(j=0; j<5; ++j)
{
if(width == 3)
weights[i][j] = weights3[i][j]/sumweights;
else if(width == 5)
weights[i][j] = weights5[i][j]/sumweights;
else
weights[i][j] = 0.;
}
}
if(width != 3 && width != 5)
weights[2][2] = 1.;
/************************************************/
/* Open the table file and find the data column */
/************************************************/
ncol = topen(input_file);
if(ncol <= 0)
{
printf("[struct stat=\"ERROR\", msg=\"Can't open input table %s\"]\n", input_file);
exit(0);
}
racol = tcol( "ra");
deccol = tcol("dec");
ra1col = tcol( "ra1");
dec1col = tcol("dec1");
ra2col = tcol( "ra2");
dec2col = tcol("dec2");
ra3col = tcol( "ra3");
dec3col = tcol("dec3");
ra4col = tcol( "ra4");
dec4col = tcol("dec4");
haveFlux = 1;
if(strlen(colname) == 0)
haveFlux = 0;
else
fluxcol = tcol(colname);
isImg = 1;
if(ra1col < 0 || dec1col < 0
|| ra2col < 0 || dec2col < 0
|| ra3col < 0 || dec3col < 0
|| ra4col < 0 || dec4col < 0)
isImg = 0;
if(useCenter)
isImg = 0;
if(!isImg)
{
if(racol < 0)
{
printf("[struct stat=\"ERROR\", msg=\"Can't find column 'ra'\"]\n");
exit(0);
}
if(deccol < 0)
{
printf("[struct stat=\"ERROR\", msg=\"Can't find column 'dec'\"]\n");
exit(0);
}
}
if(haveFlux && fluxcol < 0)
{
printf("[struct stat=\"ERROR\", msg=\"Can't find column '%s'\"]\n", colname);
exit(0);
}
/*************************************************/
/* Process the output header template to get the */
/* image size, coordinate system and projection */
/*************************************************/
readTemplate(template_file);
pixscale = fabs(output.wcs->xinc);
if(fabs(output.wcs->yinc) > pixscale)
pixscale = fabs(output.wcs->yinc);
csys = EQUJ;
if(strncmp(output.wcs->c1type, "RA", 2) == 0)
csys = EQUJ;
if(strncmp(output.wcs->c1type, "GLON", 4) == 0)
csys = GAL;
if(strncmp(output.wcs->c1type, "ELON", 4) == 0)
csys = ECLJ;
equinox = output.wcs->equinox;
if(debug >= 1)
{
printf("output.naxes[0] = %ld\n", output.naxes[0]);
printf("output.naxes[1] = %ld\n", output.naxes[1]);
printf("output.sys = %d\n", output.sys);
printf("output.epoch = %-g\n", output.epoch);
printf("output proj = %s\n", output.wcs->ptype);
printf("output crval[0] = %-g\n", output.wcs->crval[0]);
printf("output crval[1] = %-g\n", output.wcs->crval[1]);
printf("output crpix[0] = %-g\n", output.wcs->crpix[0]);
printf("output crpix[1] = %-g\n", output.wcs->crpix[1]);
printf("output cdelt[0] = %-g\n", output.wcs->cdelt[0]);
printf("output cdelt[1] = %-g\n", output.wcs->cdelt[1]);
fflush(stdout);
}
/***********************************************/
/* Allocate memory for the output image pixels */
/***********************************************/
data = (double **)malloc(output.naxes[1] * sizeof(double *));
data[0] = (double *)malloc(output.naxes[0] * output.naxes[1] * sizeof(double));
if(debug >= 1)
{
printf("%ld bytes allocated for image pixels\n",
output.naxes[0] * output.naxes[1] * sizeof(double));
fflush(stdout);
}
/**********************************************************/
/* Initialize pointers to the start of each row of pixels */
/**********************************************************/
for(i=1; i<output.naxes[1]; i++)
data[i] = data[i-1] + output.naxes[0];
if(debug >= 1)
{
printf("pixel line pointers populated\n");
fflush(stdout);
}
for (j=0; j<output.naxes[1]; ++j)
{
for (i=0; i<output.naxes[0]; ++i)
{
data[j][i] = 0.;
}
}
/************************/
/* Create the FITS file */
/************************/
remove(output_file);
if(fits_create_file(&output.fptr, output_file, &status))
printFitsError(status);
/*********************************************************/
/* Create the FITS image. All the required keywords are */
/* handled automatically. */
/*********************************************************/
if (fits_create_img(output.fptr, bitpix, naxis, output.naxes, &status))
printFitsError(status);
if(debug >= 1)
{
printf("FITS image created (not yet populated)\n");
fflush(stdout);
}
/*****************************/
/* Loop over the input files */
/*****************************/
time(&currtime);
start = currtime;
/*******************/
/* For each source */
/*******************/
count = 0;
while(tread() >= 0)
{
++count;
if(isImg)
{
if(debug && count/1000*1000 == count)
{
printf("%9d image outlines processed\n", count);
fflush(stdout);
}
ra [0] = atof(tval( ra1col));
dec[0] = atof(tval(dec1col));
ra [1] = atof(tval( ra2col));
dec[1] = atof(tval(dec2col));
ra [2] = atof(tval( ra3col));
dec[2] = atof(tval(dec3col));
ra [3] = atof(tval( ra4col));
dec[3] = atof(tval(dec4col));
for(side=0; side<4; ++side)
{
ibegin = side;
iend = (side+1)%4;
x0 = cos(ra[ibegin]*dtr) * cos(dec[ibegin]*dtr);
y0 = sin(ra[ibegin]*dtr) * cos(dec[ibegin]*dtr);
z0 = sin(dec[ibegin]*dtr);
x1 = cos(ra[iend]*dtr) * cos(dec[iend]*dtr);
y1 = sin(ra[iend]*dtr) * cos(dec[iend]*dtr);
z1 = sin(dec[iend]*dtr);
xn = y0*z1 - z0*y1;
yn = z0*x1 - x0*z1;
zn = x0*y1 - y0*x1;
len = sqrt(xn*xn + yn*yn + zn*zn);
xn = xn / len;
yn = yn / len;
zn = zn / len;
ran = atan2(yn, xn);
decn = asin(zn);
sina = sin(ran);
cosa = cos(ran);
sind = sin(decn);
cosd = cos(decn);
a11 = cosa*sind;
a12 = sina*sind;
a13 = -cosd;
a21 = -sina;
a22 = cosa;
a23 = 0.;
a31 = cosa*cosd;
a32 = sina*cosd;
a33 = sind;
x0p = a11*x0 + a12*y0 + a13*z0;
y0p = a21*x0 + a22*y0 + a23*z0;
z0p = a31*x0 + a32*y0 + a33*z0;
x1p = a11*x1 + a12*y1 + a13*z1;
y1p = a21*x1 + a22*y1 + a23*z1;
z1p = a31*x1 + a32*y1 + a33*z1;
lon0 = atan2(y0p, x0p);
lon1 = atan2(y1p, x1p);
if(fabs(lon1-lon0)/dtr > 180.)
{
if(lon0 < 0.) lon0 += 360.*dtr;
if(lon1 < 0.) lon1 += 360.*dtr;
}
sideLength = acos(x0*x1 + y0*y1 + z0*z1) / dtr;
offset = pixscale/2.*dtr;
if(lon0 > lon1)
offset = -offset;
nstep = (lon1 - lon0)/offset;
lon = lon0;
for(i=0; i<nstep; ++i)
{
lon += offset;
xp = cos(lon);
yp = sin(lon);
x = a11*xp + a21*yp;
y = a12*xp + a22*yp;
z = a13*xp + a23*yp;
rac = atan2(y,x)/dtr;
decc = asin(z)/dtr;
convertCoordinates (EQUJ, 2000., rac, decc,
csys, equinox, &ilon, &ilat, 0.);
offscl = 0;
wcs2pix(output.wcs, ilon, ilat, &oxpix, &oypix, &offscl);
fixxy(&oxpix, &oypix, &offscl);
if(haveFlux)
pixel_value = atof(tval(fluxcol));
else
pixel_value = 1;
l = (int)(oxpix + 0.5) - 1;
m = (int)(oypix + 0.5) - 1;
if(!offscl)
data[m][l] = pixel_value;
}
}
}
else
{
if(debug && count/1000*1000 == count)
{
printf("%9d sources processed\n", count);
fflush(stdout);
}
rac = atof(tval(racol));
decc = atof(tval(deccol));
convertCoordinates (EQUJ, 2000., rac, decc,
csys, equinox, &ilon, &ilat, 0.);
if(haveFlux)
pixel_value = atof(tval(fluxcol));
else
pixel_value = 1;
if(ismag)
pixel_value = pow(10., 0.4 * (refmag - pixel_value));
wcs2pix(output.wcs, ilon, ilat, &oxpix, &oypix, &offscl);
if(pixel_value < 1.e10)
{
if(debug >= 3)
{
printf(" value = %11.3e at coord = (%12.8f,%12.8f)", pixel_value, ilon, ilat);
if(offscl)
{
printf(" -> opix = (%7.1f,%7.1f) OFF SCALE\n",
oxpix, oypix);
fflush(stdout);
}
else
{
printf(" -> opix = (%7.1f,%7.1f)\n",
oxpix, oypix);
fflush(stdout);
}
}
else if(pixel_value > 1000000.)
{
printf(" value = %11.3e at coord = (%12.8f,%12.8f)", pixel_value, ilon, ilat);
if(offscl)
{
printf(" -> opix = (%7.1f,%7.1f) OFF SCALE\n",
oxpix, oypix);
fflush(stdout);
}
else
{
printf(" -> opix = (%7.1f,%7.1f)\n",
oxpix, oypix);
fflush(stdout);
}
}
if(!offscl)
{
l = (int)(oxpix + 0.5) - 1;
m = (int)(oypix + 0.5) - 1;
if(l < 0 || m < 0 || l >= output.naxes[0] || m >= output.naxes[1])
{
/*
printf("ERROR: l=%d, m=%d\n", l, m);
fflush(stdout);
*/
}
else
{
for(dl=-2; dl<=2; ++dl)
{
if(l+dl < 0 || l+dl>= output.naxes[0])
continue;
for(dm=-2; dm<=2; ++dm)
{
if(m+dm < 0 || m+dm>= output.naxes[1])
continue;
data[m+dm][l+dl] += weights[dm+2][dl+2] * pixel_value;
}
}
}
}
}
}
}
/************************/
/* Write the image data */
/************************/
fpixel = 1;
nelements = output.naxes[0] * output.naxes[1];
if (fits_write_img(output.fptr, TDOUBLE, fpixel, nelements, data[0], &status))
printFitsError(status);
if(debug >= 1)
{
printf("Data array written to FITS image\n");
fflush(stdout);
}
/*************************************/
/* Add keywords from a template file */
/*************************************/
if(fits_write_key_template(output.fptr, template_file, &status))
printFitsError(status);
if(debug >= 1)
{
printf("Template keywords written to FITS image\n");
fflush(stdout);
}
/***********************/
/* Close the FITS file */
/***********************/
if(fits_close_file(output.fptr, &status))
printFitsError(status);
if(debug >= 1)
{
printf("FITS image finalized\n");
fflush(stdout);
}
time(&currtime);
printf("[struct stat=\"OK\", time=%d]\n",
(int)(currtime - start));
fflush(stdout);
exit(0);
}
struct mExamineReturn * mExamine(char *infile, int areaMode, int hdu, int plane3, int plane4,
double ra, double dec, double radius, int locinpix, int radinpix, int debug)
{
int i, j, offscl, nullcnt;
int status, clockwise, nfound;
int npix, nnull, first;
int ixpix, iypix;
int maxi, maxj;
char *header;
char tmpstr[32768];
char proj[32];
int csys;
char csys_str[64];
char ctype1[256];
char ctype2[256];
double equinox;
long naxis;
long naxes[10];
double naxis1;
double naxis2;
double crval1;
double crval2;
double crpix1;
double crpix2;
double cdelt1;
double cdelt2;
double crota2;
double lon, lat;
double lonc, latc;
double rac, decc;
double racp, deccp;
double ra1, dec1, ra2, dec2, ra3, dec3, ra4, dec4;
double xpix, ypix, rpix, rap;
double x, y, z;
double xp, yp, zp;
double rot, beta, dtr;
double r;
double sumflux, sumflux2, sumn, mean, background, oldbackground, rms, dot;
double sigmaref, sigmamax, sigmamin;
double val, valx, valy, valra, valdec;
double min, minx, miny, minra, mindec;
double max, maxx, maxy, maxra, maxdec;
double x0, y0, z0;
double fluxMin, fluxMax, fluxRef, sigma;
struct WorldCoor *wcs;
fitsfile *fptr;
int ibegin, iend, jbegin, jend;
long fpixel[4], nelements;
double *data = (double *)NULL;
struct apPhoto *ap = (struct apPhoto *)NULL;
int nflux, maxflux;
struct mExamineReturn *returnStruct;
returnStruct = (struct mExamineReturn *)malloc(sizeof(struct mExamineReturn));
memset((void *)returnStruct, 0, sizeof(returnStruct));
returnStruct->status = 1;
strcpy(returnStruct->msg, "");
nflux = 0;
maxflux = MAXFLUX;
/************************************************/
/* Make a NaN value to use setting blank pixels */
/************************************************/
union
{
double d;
char c[8];
}
value;
double nan;
for(i=0; i<8; ++i)
value.c[i] = (char)255;
nan = value.d;
dtr = atan(1.)/45.;
/* Process basic command-line arguments */
if(debug)
{
printf("DEBUG> areaMode = %d \n", areaMode);
printf("DEBUG> infile = %s \n", infile);
printf("DEBUG> ra = %-g\n", ra);
printf("DEBUG> dec = %-g\n", dec);
printf("DEBUG> radius = %-g\n", radius);
fflush(stdout);
}
rpix = 0.;
if(areaMode == APPHOT)
ap = (struct apPhoto *)malloc(maxflux * sizeof(struct apPhoto));
/* Open the FITS file and initialize the WCS transform */
status = 0;
if(fits_open_file(&fptr, infile, READONLY, &status))
{
if(ap) free(ap);
sprintf(returnStruct->msg, "Cannot open FITS file %s", infile);
return returnStruct;
}
if(hdu > 0)
{
status = 0;
if(fits_movabs_hdu(fptr, hdu+1, NULL, &status))
{
if(ap) free(ap);
sprintf(returnStruct->msg, "Can't find HDU %d", hdu);
return returnStruct;
}
}
status = 0;
if(fits_get_image_wcs_keys(fptr, &header, &status))
{
if(ap) free(ap);
sprintf(returnStruct->msg, "Cannot find WCS keys in FITS file %s", infile);
return returnStruct;
}
status = 0;
if(fits_read_key_lng(fptr, "NAXIS", &naxis, (char *)NULL, &status))
{
if(ap) free(ap);
sprintf(returnStruct->msg, "Cannot find NAXIS keyword in FITS file %s", infile);
return returnStruct;
}
status = 0;
if(fits_read_keys_lng(fptr, "NAXIS", 1, naxis, naxes, &nfound, &status))
{
if(ap) free(ap);
sprintf(returnStruct->msg, "Cannot find NAXIS1,2 keywords in FITS file %s", infile);
return returnStruct;
}
wcs = wcsinit(header);
if(wcs == (struct WorldCoor *)NULL)
{
if(ap) free(ap);
sprintf(returnStruct->msg, "WCS initialization failed.");
return returnStruct;
}
/* A bunch of the parameters we want are in the WCS structure */
clockwise = 0;
strcpy(ctype1, wcs->ctype[0]);
strcpy(ctype2, wcs->ctype[1]);
naxis1 = wcs->nxpix;
naxis2 = wcs->nypix;
crval1 = wcs->xref;
crval2 = wcs->yref;
crpix1 = wcs->xrefpix;
crpix2 = wcs->yrefpix;
cdelt1 = wcs->xinc;
cdelt2 = wcs->yinc;
crota2 = wcs->rot;
if((cdelt1 < 0 && cdelt2 < 0)
|| (cdelt1 > 0 && cdelt2 > 0)) clockwise = 1;
strcpy(proj, "");
if(strlen(ctype1) > 5)
strcpy (proj, ctype1+5);
/* We get the Equinox from the WCS. If not */
/* there we take the command-line value. We */
/* then infer Julian/Besselian as best we can. */
equinox = wcs->equinox;
csys = EQUJ;
strcpy(csys_str, "EQUJ");
if(strncmp(ctype1, "RA--", 4) == 0)
{
csys = EQUJ;
strcpy(csys_str, "EQUJ");
if(equinox < 1975.)
{
csys = EQUB;
strcpy(csys_str, "EQUB");
}
}
if(strncmp(ctype1, "LON-", 4) == 0)
{
csys = GAL;
strcpy(csys_str, "GAL");
}
if(strncmp(ctype1, "GLON", 4) == 0)
{
csys = GAL;
strcpy(csys_str, "GAL");
}
if(strncmp(ctype1, "ELON", 4) == 0)
{
csys = ECLJ;
strcpy(csys_str, "ECLJ");
if(equinox < 1975.)
{
csys = ECLB;
strcpy(csys_str, "ECLB");
}
}
if(debug)
{
printf("DEBUG> proj = [%s]\n", proj);
printf("DEBUG> csys = %d\n", csys);
printf("DEBUG> clockwise = %d\n", clockwise);
printf("DEBUG> ctype1 = [%s]\n", ctype1);
printf("DEBUG> ctype2 = [%s]\n", ctype2);
printf("DEBUG> equinox = %-g\n", equinox);
printf("\n");
fflush(stdout);
}
/* To get corners and rotation in EQUJ we need the */
/* locations of the center pixel and the one above it. */
pix2wcs(wcs, wcs->nxpix/2.+0.5, wcs->nypix/2.+0.5, &lonc, &latc);
convertCoordinates (csys, equinox, lonc, latc,
EQUJ, 2000., &rac, &decc, 0.);
pix2wcs(wcs, wcs->nxpix/2.+0.5, wcs->nypix/2.+1.5, &lonc, &latc);
convertCoordinates (csys, equinox, lonc, latc,
EQUJ, 2000., &racp, &deccp, 0.);
/* Use spherical trig to get the Equatorial rotation angle */
x = cos(decc*dtr) * cos(rac*dtr);
y = cos(decc*dtr) * sin(rac*dtr);
z = sin(decc*dtr);
xp = cos(deccp*dtr) * cos(racp*dtr);
yp = cos(deccp*dtr) * sin(racp*dtr);
zp = sin(deccp*dtr);
beta = acos(x*xp + y*yp + z*zp) / dtr;
rot = asin(cos(deccp*dtr) * sin((rac-racp)*dtr)/sin(beta*dtr)) / dtr;
/* And for the four corners we want them uniformly clockwise */
if(!clockwise)
{
pix2wcs(wcs, -0.5, -0.5, &lon, &lat);
convertCoordinates (csys, equinox, lon, lat,
EQUJ, 2000., &ra1, &dec1, 0.);
pix2wcs(wcs, wcs->nxpix+0.5, -0.5, &lon, &lat);
convertCoordinates (csys, equinox, lon, lat,
EQUJ, 2000., &ra2, &dec2, 0.);
pix2wcs(wcs, wcs->nxpix+0.5, wcs->nypix+0.5, &lon, &lat);
convertCoordinates (csys, equinox, lon, lat,
EQUJ, 2000., &ra3, &dec3, 0.);
pix2wcs(wcs, -0.5, wcs->nypix+0.5, &lon, &lat);
convertCoordinates (csys, equinox, lon, lat,
EQUJ, 2000., &ra4, &dec4, 0.);
}
else
{
pix2wcs(wcs, -0.5, -0.5, &lon, &lat);
convertCoordinates (csys, equinox, lon, lat,
EQUJ, 2000., &ra2, &dec2, 0.);
pix2wcs(wcs, wcs->nxpix+0.5, -0.5, &lon, &lat);
convertCoordinates (csys, equinox, lon, lat,
EQUJ, 2000., &ra1, &dec1, 0.);
pix2wcs(wcs, wcs->nxpix+0.5, wcs->nypix+0.5, &lon, &lat);
convertCoordinates (csys, equinox, lon, lat,
EQUJ, 2000., &ra4, &dec4, 0.);
pix2wcs(wcs, -0.5, wcs->nypix+0.5, &lon, &lat);
convertCoordinates (csys, equinox, lon, lat,
EQUJ, 2000., &ra3, &dec3, 0.);
}
// Treat the default region (ALL) as a circle
// containing the whole image
if(areaMode == ALL)
{
locinpix = 1;
radinpix = 1;
ra = wcs->nxpix / 2.;
dec = wcs->nypix / 2.;
radius = sqrt(wcs->nxpix*wcs->nxpix + wcs->nypix*wcs->nypix)/2.;
}
/* Get region statistics */
ixpix = 1;
iypix = 1;
if(radinpix)
{
rpix = radius;
radius = rpix * fabs(cdelt2);
}
else
rpix = radius / fabs(cdelt2);
if(locinpix)
{
xpix = ra;
ypix = dec;
pix2wcs(wcs, xpix, ypix, &lon, &lat);
if(wcs->offscl)
{
if(ap) free(ap);
sprintf(returnStruct->msg, "Location off the image.");
return returnStruct;
}
convertCoordinates (csys, equinox, lon, lat,
EQUJ, 2000., &ra, &dec, 0);
}
else
{
convertCoordinates (EQUJ, 2000., ra, dec,
csys, equinox, &lon, &lat, 0.);
wcs2pix(wcs, lon, lat, &xpix, &ypix, &offscl);
if(offscl)
{
if(ap) free(ap);
sprintf(returnStruct->msg, "Location off the image.");
return returnStruct;
}
}
x0 = cos(ra*dtr) * cos(dec*dtr);
y0 = sin(ra*dtr) * cos(dec*dtr);
z0 = sin(dec*dtr);
ixpix = (int)(xpix+0.5);
iypix = (int)(ypix+0.5);
if(debug)
{
printf("DEBUG> Region statististics for %-g pixels around (%-g,%-g) [%d,%d] [Equatorial (%-g, %-g)\n",
rpix, xpix, ypix, ixpix, iypix, ra, dec);
fflush(stdout);
}
// Then read the data
jbegin = iypix - rpix - 1;
jend = iypix + rpix + 1;
ibegin = ixpix - rpix - 1;
iend = ixpix + rpix + 1;
if(ibegin < 1 ) ibegin = 1;
if(iend > wcs->nxpix) iend = wcs->nxpix;
nelements = iend - ibegin + 1;
if(jbegin < 1 ) jbegin = 1;
if(jend > wcs->nypix) jend = wcs->nxpix;
fpixel[0] = ibegin;
fpixel[1] = jbegin;
fpixel[2] = 1;
fpixel[3] = 1;
fpixel[2] = plane3;
fpixel[3] = plane4;
data = (double *)malloc(nelements * sizeof(double));
status = 0;
sumflux = 0.;
sumflux2 = 0.;
npix = 0;
nnull = 0;
val = 0.;
valx = 0.;
valy = 0.;
valra = 0.;
valdec = 0.;
max = 0.;
maxx = 0.;
maxy = 0.;
maxra = 0.;
maxdec = 0.;
min = 0.;
minx = 0.;
miny = 0.;
minra = 0.;
mindec = 0.;
first = 1;
if(radius > 0.)
{
if(debug)
{
printf("\nDEBUG> Location: (%.6f %.6f) -> (%d,%d)\n\n", xpix, ypix, ixpix, iypix);
printf("DEBUG> Radius: %.6f\n\n", rpix);
printf("DEBUG> i: %d to %d\n", ibegin, iend);
printf("DEBUG> j: %d to %d\n", jbegin, jend);
}
for (j=jbegin; j<=jend; ++j)
{
status = 0;
if(fits_read_pix(fptr, TDOUBLE, fpixel, nelements, &nan,
(void *)data, &nullcnt, &status))
{
++fpixel[1];
continue;
}
for(i=0; i<nelements; ++i)
{
if(mNaN(data[i]))
{
if(debug)
printf("%10s ", "NULL");
++nnull;
continue;
}
sumflux += data[i];
sumflux2 += data[i]*data[i];
++npix;
x = ibegin + i;
y = j;
pix2wcs(wcs, x, y, &lon, &lat);
convertCoordinates(csys, equinox, lon, lat, EQUJ, 2000., &ra, &dec, 0.);
xp = cos(ra*dtr) * cos(dec*dtr);
yp = sin(ra*dtr) * cos(dec*dtr);
zp = sin(dec*dtr);
dot = xp*x0 + yp*y0 + zp*z0;
if(dot > 1.)
dot = 1.;
r = acos(dot)/dtr / fabs(cdelt2);
if(debug)
{
if(r <= rpix)
printf("%10.3f ", data[i]);
else
printf("%10s ", ".");
}
if(r > rpix)
continue;
if(x == ixpix && y == iypix)
{
val = data[i];
valx = x;
valy = y;
}
if(first)
{
first = 0;
min = data[i];
minx = x;
miny = y;
max = data[i];
maxx = x;
maxy = y;
maxi = i+ibegin;
maxj = j;
}
if(data[i] > max)
{
max = data[i];
maxx = x;
maxy = y;
maxi = i+ibegin;
maxj = j;
}
if(data[i] < min)
{
min = data[i];
minx = x;
miny = y;
}
}
pix2wcs(wcs, valx, valy, &lon, &lat);
convertCoordinates(csys, equinox, lon, lat, EQUJ, 2000., &valra, &valdec, 0.);
pix2wcs(wcs, minx, miny, &lon, &lat);
convertCoordinates(csys, equinox, lon, lat, EQUJ, 2000., &minra, &mindec, 0.);
pix2wcs(wcs, maxx, maxy, &lon, &lat);
convertCoordinates(csys, equinox, lon, lat, EQUJ, 2000., &maxra, &maxdec, 0.);
if(debug)
printf("\n");
++fpixel[1];
}
mean = 0.;
rms = 0.;
sigmaref = 0.;
sigmamin = 0.;
sigmamax = 0.;
if(npix > 0)
{
mean = sumflux / npix;
rms = sqrt(sumflux2/npix - mean*mean);
sigmaref = (val - mean) / rms;
sigmamin = (min - mean) / rms;
sigmamax = (max - mean) / rms;
}
}
/* Finally, print out parameters */
strcpy(montage_json, "{");
strcpy(montage_msgstr, "");
if(areaMode == ALL || areaMode == REGION)
{
sprintf(tmpstr, "\"proj\":\"%s\",", proj); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"csys\":\"%s\",", csys_str); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"equinox\":%.1f,", equinox); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"naxis\":%ld,", naxis); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"naxis1\":%d,", (int)naxis1); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"naxis2\":%d,", (int)naxis2); strcat(montage_json, tmpstr);
if(naxis > 2)
{
sprintf(tmpstr, " \"naxis3\":%ld,", naxes[2]); strcat(montage_json, tmpstr);
}
if(naxis > 3)
{
sprintf(tmpstr, " \"naxis4\":%ld,", naxes[3]); strcat(montage_json, tmpstr);
}
sprintf(tmpstr, " \"crval1\":%.7f,", crval1); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"crval2\":%.7f,", crval2); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"crpix1\":%-g,", crpix1); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"crpix2\":%-g,", crpix2); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"cdelt1\":%.7f,", cdelt1); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"cdelt2\":%.7f,", cdelt2); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"crota2\":%.4f,", crota2); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"lonc\":%.7f,", lonc); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"latc\":%.7f,", latc); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"ximgsize\":%.6f,", fabs(naxis1*cdelt1)); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"yimgsize\":%.6f,", fabs(naxis1*cdelt2)); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"rotequ\":%.4f,", rot); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"rac\":%.7f,", rac); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"decc\":%.7f,", decc); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"ra1\":%.7f,", ra1); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"dec1\":%.7f,", dec1); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"ra2\":%.7f,", ra2); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"dec2\":%.7f,", dec2); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"ra3\":%.7f,", ra3); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"dec3\":%.7f,", dec3); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"ra4\":%.7f,", ra4); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"dec4\":%.7f,", dec4); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"radius\":%.7f,", radius); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"radpix\":%.2f,", rpix); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"npixel\":%d,", npix); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"nnull\":%d,", nnull); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"aveflux\":%-g,", mean); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"rmsflux\":%-g,", rms); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"fluxref\":%-g,", val); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"sigmaref\":%-g,", sigmaref); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"xref\":%.0f,", valx); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"yref\":%.0f,", valy); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"raref\":%.7f,", valra); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"decref\":%.7f,", valdec); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"fluxmin\":%-g,", min); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"sigmamin\":%-g,", sigmamin); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"xmin\":%.0f,", minx); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"ymin\":%.0f,", miny); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"ramin\":%.7f,", minra); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"decmin\":%.7f,", mindec); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"fluxmax\":%-g,", max); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"sigmamax\":%-g,", sigmamax); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"xmax\":%.0f,", maxx); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"ymax\":%.0f,", maxy); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"ramax\":%.7f,", maxra); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"decmax\":%.7f", maxdec); strcat(montage_json, tmpstr);
sprintf(tmpstr, "proj=\"%s\",", proj); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " csys=\"%s\",", csys_str); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " equinox=%.1f,", equinox); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " naxis=%ld,", naxis); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " naxis1=%d,", (int)naxis1); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " naxis2=%d,", (int)naxis2); strcat(montage_msgstr, tmpstr);
if(naxis > 2)
{
sprintf(tmpstr, " naxis3=%ld,", naxes[2]); strcat(montage_msgstr, tmpstr);
}
if(naxis > 3)
{
sprintf(tmpstr, " naxis4=%ld,", naxes[3]); strcat(montage_msgstr, tmpstr);
}
sprintf(tmpstr, " crval1=%.7f,", crval1); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " crval2=%.7f,", crval2); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " crpix1=%-g,", crpix1); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " crpix2=%-g,", crpix2); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " cdelt1=%.7f,", cdelt1); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " cdelt2=%.7f,", cdelt2); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " crota2=%.4f,", crota2); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " lonc=%.7f,", lonc); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " latc=%.7f,", latc); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " ximgsize=%.6f,", fabs(naxis1*cdelt1)); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " yimgsize=%.6f,", fabs(naxis1*cdelt2)); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " rotequ=%.4f,", rot); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " rac=%.7f,", rac); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " decc=%.7f,", decc); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " ra1=%.7f,", ra1); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " dec1=%.7f,", dec1); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " ra2=%.7f,", ra2); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " dec2=%.7f,", dec2); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " ra3=%.7f,", ra3); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " dec3=%.7f,", dec3); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " ra4=%.7f,", ra4); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " dec4=%.7f,", dec4); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " radius=%.7f,", radius); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " radpix=%.2f,", rpix); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " npixel=%d,", npix); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " nnull=%d,", nnull); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " aveflux=%-g,", mean); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " rmsflux=%-g,", rms); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " fluxref=%-g,", val); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " sigmaref=%-g,", sigmaref); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " xref=%.0f,", valx); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " yref=%.0f,", valy); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " raref=%.7f,", valra); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " decref=%.7f,", valdec); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " fluxmin=%-g,", min); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " sigmamin=%-g,", sigmamin); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " xmin=%.0f,", minx); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " ymin=%.0f,", miny); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " ramin=%.7f,", minra); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " decmin=%.7f,", mindec); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " fluxmax=%-g,", max); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " sigmamax=%-g,", sigmamax); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " xmax=%.0f,", maxx); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " ymax=%.0f,", maxy); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " ramax=%.7f,", maxra); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " decmax=%.7f", maxdec); strcat(montage_msgstr, tmpstr);
}
else if(areaMode == APPHOT)
{
// For aperture photometry mode we process the flux vs. radius data
// to get the integrated source flux.
rap = radius;
jbegin = maxj - rap - 1;
jend = maxj + rap + 1;
ibegin = maxi - rap - 1;
iend = maxi + rap + 1;
nelements = iend - ibegin + 1;
fpixel[0] = ibegin;
fpixel[1] = jbegin;
fpixel[2] = 1;
fpixel[3] = 1;
for (j=jbegin; j<=jend; ++j)
{
status = 0;
if(fits_read_pix(fptr, TDOUBLE, fpixel, nelements, &nan,
(void *)data, &nullcnt, &status))
{
if(ap) free(ap);
free(data);
sprintf(returnStruct->msg, "Error reading FITS data.");
return returnStruct;
}
for(i=0; i<nelements; ++i)
{
if(mNaN(data[i]))
continue;
r = sqrt(((double)i+ibegin-maxi)*((double)i+ibegin-maxi) + ((double)j-maxj)*((double)j-maxj));
if(r > rap)
continue;
ap[nflux].rad = r;
ap[nflux].flux = data[i];
ap[nflux].fit = 0.;
++nflux;
if(nflux >= maxflux)
{
maxflux += MAXFLUX;
ap = (struct apPhoto *)realloc(ap, maxflux * sizeof(struct apPhoto));
}
}
++fpixel[1];
}
// Sort the data by radius
qsort(ap, (size_t)nflux, sizeof(struct apPhoto), mExamine_radCompare);
// Find the peak flux and the minimum flux.
// The max is constrained to be in the first quarter of the
// data, just to be careful.
fluxMax = -1.e99;
fluxMin = 1.e99;
for(i=0; i<nflux; ++i)
{
if(i < nflux/4 && ap[i].flux > fluxMax)
fluxMax = ap[i].flux;
if(ap[i].flux < fluxMin)
fluxMin = ap[i].flux;
}
// Fit the minimum a little more carefully, iterating
// and excluding points more than 3 sigma above the
// minimum.
background = fluxMin;
sigma = fluxMax - fluxMin;
for(j=0; j<1000; ++j)
{
oldbackground = background;
sumn = 0.;
sumflux = 0.;
sumflux2 = 0.;
for(i=0; i<nflux; ++i)
{
if(fabs(ap[i].flux - background) > 3.*sigma)
continue;
sumn += 1.;
sumflux += ap[i].flux;
sumflux2 += ap[i].flux * ap[i].flux;
}
background = sumflux / sumn;
sigma = sqrt(sumflux2/sumn - background*background);
if(fabs((background - oldbackground) / oldbackground) < 1.e-3)
break;
}
fluxRef = (fluxMax-fluxMin) / exp(1.);
for(i=0; i<nflux; ++i)
{
if(ap[i].flux < fluxRef)
{
sigma = ap[i].rad;
break;
}
}
for(i=0; i<nflux; ++i)
{
ap[i].fit = (fluxMax-background) * exp(-(ap[i].rad * ap[i].rad) / (sigma * sigma)) + background;
if(i == 0)
ap[i].sum = ap[i].flux - background;
else
ap[i].sum = ap[i-1].sum + (ap[i].flux - background);
}
if(debug)
{
printf("| rad | flux | fit | sum |\n");
fflush(stdout);
for(i=0; i<nflux; ++i)
{
printf("%12.6f %12.6f %12.6f %12.6f \n", ap[i].rad, ap[i].flux, ap[i].fit, ap[i].sum);
fflush(stdout);
}
}
sprintf(tmpstr, "\"proj\":\"%s\",", proj); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"csys\":\"%s\",", csys_str); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"equinox\":%.1f,", equinox); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"naxis\":%ld,", naxis); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"naxis1\":%d,", (int)naxis1); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"naxis2\":%d,", (int)naxis2); strcat(montage_json, tmpstr);
if(naxis > 2)
{
sprintf(tmpstr, " \"naxis3\":%ld,", naxes[2]); strcat(montage_json, tmpstr);
}
if(naxis > 3)
{
sprintf(tmpstr, " \"naxis4\":%ld,", naxes[3]); strcat(montage_json, tmpstr);
}
sprintf(tmpstr, " \"crval1\":%.7f,", crval1); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"crval2\":%.7f,", crval2); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"crpix1\":%-g,", crpix1); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"crpix2\":%-g,", crpix2); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"cdelt1\":%.7f,", cdelt1); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"cdelt2\":%.7f,", cdelt2); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"crota2\":%.4f,", crota2); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"lonc\":%.7f,", lonc); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"latc\":%.7f,", latc); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"ximgsize\":%.6f,", fabs(naxis1*cdelt1)); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"yimgsize\":%.6f,", fabs(naxis1*cdelt2)); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"rotequ\":%.4f,", rot); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"rac\":%.7f,", rac); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"decc\":%.7f,", decc); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"ra1\":%.7f,", ra1); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"dec1\":%.7f,", dec1); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"ra2\":%.7f,", ra2); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"dec2\":%.7f,", dec2); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"ra3\":%.7f,", ra3); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"dec3\":%.7f,", dec3); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"ra4\":%.7f,", ra4); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"dec4\":%.7f,", dec4); strcat(montage_json, tmpstr);
sprintf(tmpstr, " \"totalflux\":%.7e", ap[nflux/2].sum); strcat(montage_json, tmpstr);
sprintf(tmpstr, "proj=\"%s\",", proj); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " csys=\"%s\",", csys_str); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " equinox=%.1f,", equinox); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " naxis=%ld,", naxis); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " naxis1=%d,", (int)naxis1); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " naxis2=%d,", (int)naxis2); strcat(montage_msgstr, tmpstr);
if(naxis > 2)
{
sprintf(tmpstr, " naxis3=%ld,", naxes[2]); strcat(montage_msgstr, tmpstr);
}
if(naxis > 3)
{
sprintf(tmpstr, " naxis4=%ld,", naxes[3]); strcat(montage_msgstr, tmpstr);
}
sprintf(tmpstr, " crval1=%.7f,", crval1); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " crval2=%.7f,", crval2); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " crpix1=%-g,", crpix1); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " crpix2=%-g,", crpix2); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " cdelt1=%.7f,", cdelt1); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " cdelt2=%.7f,", cdelt2); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " crota2=%.4f,", crota2); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " lonc=%.7f,", lonc); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " latc=%.7f,", latc); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " ximgsize=%.6f,", fabs(naxis1*cdelt1)); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " yimgsize=%.6f,", fabs(naxis1*cdelt2)); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " rotequ=%.4f,", rot); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " rac=%.7f,", rac); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " decc=%.7f,", decc); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " ra1=%.7f,", ra1); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " dec1=%.7f,", dec1); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " ra2=%.7f,", ra2); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " dec2=%.7f,", dec2); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " ra3=%.7f,", ra3); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " dec3=%.7f,", dec3); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " ra4=%.7f,", ra4); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " dec4=%.7f,", dec4); strcat(montage_msgstr, tmpstr);
sprintf(tmpstr, " totalflux=%.7e", ap[nflux/2].sum); strcat(montage_msgstr, tmpstr);
}
strcat(montage_json, "}");
if(ap) free(ap);
free(data);
returnStruct->status = 0;
strcpy(returnStruct->msg, montage_msgstr);
strcpy(returnStruct->json, montage_json);
strcpy(returnStruct->proj, proj);
strcpy(returnStruct->csys, csys_str);
returnStruct->equinox = equinox;
returnStruct->naxis = naxis;
returnStruct->naxis1 = naxis1;
returnStruct->naxis2 = naxis2;
returnStruct->naxis3 = naxes[2];
returnStruct->naxis4 = naxes[3];
returnStruct->crval1 = crval1;
returnStruct->crval2 = crval2;
returnStruct->crpix1 = crpix1;
returnStruct->crpix2 = crpix2;
returnStruct->cdelt1 = cdelt1;
returnStruct->cdelt2 = cdelt2;
returnStruct->crota2 = crota2;
returnStruct->lonc = lonc;
returnStruct->latc = latc;
returnStruct->ximgsize = fabs(naxis1*cdelt1);
returnStruct->yimgsize = fabs(naxis2*cdelt2);
returnStruct->rotequ = rot;
returnStruct->rac = rac;
returnStruct->decc = decc;
returnStruct->ra1 = ra1;
returnStruct->dec1 = dec1;
returnStruct->ra2 = ra2;
returnStruct->dec2 = dec2;
returnStruct->ra3 = ra3;
returnStruct->dec3 = dec3;
returnStruct->ra4 = ra4;
returnStruct->dec4 = dec4;
returnStruct->radius = radius;
returnStruct->radpix = rpix;
returnStruct->npixel = npix;
returnStruct->nnull = nnull;
returnStruct->aveflux = mean;
returnStruct->rmsflux = rms;
returnStruct->fluxref = val;
returnStruct->sigmaref = sigmaref;
returnStruct->xref = valx;
returnStruct->yref = valy;
returnStruct->raref = valra;
returnStruct->decref = valdec;
returnStruct->fluxmin = min;
returnStruct->sigmamin = sigmamin;
returnStruct->xmin = minx;
returnStruct->ymin = miny;
returnStruct->ramin = minra;
returnStruct->decmin = mindec;
returnStruct->fluxmax = max;
returnStruct->sigmamax = sigmamax;
returnStruct->xmax = maxx;
returnStruct->ymax = maxy;
returnStruct->ramax = maxra;
returnStruct->decmax = maxdec;
if(areaMode == APPHOT)
returnStruct->totalflux = ap[nflux/2].sum;
else
returnStruct->totalflux = 0.;
return returnStruct;
}
int main(int argc, char **argv)
{
int c;
char header[32768];
char temp [MAXSTR];
char fmt [MAXSTR];
char rfmt [MAXSTR];
char pfmt [MAXSTR];
char cfmt [MAXSTR];
char ofile [MAXSTR];
char scale [MAXSTR];
int i, j;
int namelen, nimages, ntotal, stat;
double xpos, ypos;
double lon, lat;
double oxpix, oypix;
int oxpixMin, oypixMin;
int oxpixMax, oypixMax;
int offscl, mode;
int ncols;
FILE *fraw;
FILE *fproj;
FILE *fcorr;
/***************************************/
/* Process the command-line parameters */
/***************************************/
debug = 0;
opterr = 0;
fstatus = stdout;
while ((c = getopt(argc, argv, "ds:")) != EOF)
{
switch (c)
{
case 'd':
debug = 1;
break;
case 's':
if((fstatus = fopen(optarg, "w+")) == (FILE *)NULL)
{
printf("[struct stat=\"ERROR\", msg=\"Cannot open status file: %s\"]\n",
optarg);
exit(1);
}
break;
default:
printf("[struct stat=\"ERROR\", msg=\"Usage: %s [-d][-s statusfile] images.tbl hdr.template raw.tbl projected.tbl corrected.tbl\"]\n", argv[0]);
exit(1);
break;
}
}
if (argc - optind < 5)
{
printf("[struct stat=\"ERROR\", msg=\"Usage: %s [-d][-s statusfile] images.tbl hdr.template raw.tbl projected.tbl corrected.tbl\"]\n", argv[0]);
exit(1);
}
strcpy(origimg_file, argv[optind]);
strcpy(template_file, argv[optind + 1]);
strcpy(rawimg_file, argv[optind + 2]);
strcpy(projimg_file, argv[optind + 3]);
strcpy(corrimg_file, argv[optind + 4]);
checkHdr(template_file, 1, 0);
if(debug)
{
printf("\norigimg_file = [%s]\n", origimg_file);
printf("template_file = [%s]\n\n", template_file);
printf("rawimg_file = [%s]\n", rawimg_file);
printf("projimg_file = [%s]\n", projimg_file);
printf("corrimg_file = [%s]\n", corrimg_file);
fflush(stdout);
}
/*************************************************/
/* Process the output header template to get the */
/* image size, coordinate system and projection */
/*************************************************/
readTemplate(template_file);
if(debug)
{
printf("\noutput.sys = %d\n", output.sys);
printf("output.epoch = %-g\n", output.epoch);
printf("output proj = %s\n", output.wcs->ptype);
fflush(stdout);
}
/*********************************************/
/* Open the image header metadata table file */
/*********************************************/
ncols = topen(origimg_file);
if(ncols <= 0)
{
fprintf(fstatus, "[struct stat=\"ERROR\", msg=\"Invalid image metadata file: %s\"]\n",
origimg_file);
exit(1);
}
icntr = tcol("cntr");
ictype1 = tcol("ctype1");
ictype2 = tcol("ctype2");
iequinox = tcol("equinox");
inl = tcol("nl");
ins = tcol("ns");
icrval1 = tcol("crval1");
icrval2 = tcol("crval2");
icrpix1 = tcol("crpix1");
icrpix2 = tcol("crpix2");
icdelt1 = tcol("cdelt1");
icdelt2 = tcol("cdelt2");
icrota2 = tcol("crota2");
iepoch = tcol("epoch");
ifname = tcol("fname");
iscale = tcol("scale");
icd11 = tcol("cd1_1");
icd12 = tcol("cd1_2");
icd21 = tcol("cd2_1");
icd22 = tcol("cd2_2");
if(ins < 0)
ins = tcol("naxis1");
if(inl < 0)
inl = tcol("naxis2");
if(ifname < 0)
ifname = tcol("file");
if(icd11 >= 0 && icd12 >= 0 && icd21 >= 0 && icd12 >= 0)
mode = CD;
else if(icdelt1 >= 0 && icdelt2 >= 0 && icrota2 >= 0)
mode = CDELT;
else
{
fprintf(fstatus, "[struct stat=\"ERROR\", msg=\"Not enough information to determine coverages (CDELTs or CD matrix)\"]\n");
exit(1);
}
if(icntr < 0
|| ictype1 < 0
|| ictype2 < 0
|| inl < 0
|| ins < 0
|| icrval1 < 0
|| icrval2 < 0
|| icrpix1 < 0
|| icrpix2 < 0
|| ifname < 0)
{
fprintf(fstatus, "[struct stat=\"ERROR\", msg=\"Need columns: cntr ctype1 ctype2 nl ns crval1 crval2 crpix1 crpix2 cdelt1 cdelt2 crota2 fname (equinox optional)\"]\n");
exit(1);
}
/******************************************************/
/* Scan the table to get the true 'file' column width */
/******************************************************/
namelen = 0;
while(1)
{
stat = tread();
if(stat < 0)
break;
strcpy(input.fname, fileName(tval(ifname)));
if(strlen(input.fname) > namelen)
namelen = strlen(input.fname);
}
tseek(0);
/*************************************/
/* Write headers to the output files */
/*************************************/
if((fraw = (FILE *)fopen(rawimg_file, "w+")) == (FILE *)NULL)
{
fprintf(fstatus, "[struct stat=\"ERROR\", msg=\"Invalid output metadata file: %s\"]\n",
rawimg_file);
exit(1);
}
fprintf(fraw, "\\datatype=fitshdr\n");
if(iscale >= 0)
{
sprintf(fmt, "|%%5s|%%8s|%%8s|%%6s|%%6s|%%10s|%%10s|%%10s|%%10s|%%11s|%%11s|%%8s|%%7s|%%10s|%%%ds|\n", namelen+2);
fprintf(fraw, fmt,
"cntr",
"ctype1",
"ctype2",
"naxis1",
"naxis2",
"crval1",
"crval2",
"crpix1",
"crpix2",
"cdelt1",
"cdelt2",
"crota2",
"equinox",
"scale",
"file");
fprintf(fraw, fmt,
"int",
"char",
"char",
"int",
"int",
"double",
"double",
"double",
"double",
"double",
"double",
"double",
"int",
"double",
"char");
}
else
{
sprintf(fmt, "|%%5s|%%8s|%%8s|%%6s|%%6s|%%10s|%%10s|%%10s|%%10s|%%11s|%%11s|%%8s|%%7s|%%%ds|\n", namelen+2);
fprintf(fraw, fmt,
"cntr",
"ctype1",
"ctype2",
"naxis1",
"naxis2",
"crval1",
"crval2",
"crpix1",
"crpix2",
"cdelt1",
"cdelt2",
"crota2",
"equinox",
"file");
fprintf(fraw, fmt,
"int",
"char",
"char",
"int",
"int",
"double",
"double",
"double",
"double",
"double",
"double",
"double",
"int",
"char");
}
if((fproj = (FILE *)fopen(projimg_file, "w+")) == (FILE *)NULL)
{
fprintf(fstatus, "[struct stat=\"ERROR\", msg=\"Invalid output metadata file: %s\"]\n",
projimg_file);
exit(1);
}
fprintf(fproj, "\\datatype=fitshdr\n");
sprintf(fmt, "|%%5s|%%8s|%%8s|%%6s|%%6s|%%10s|%%10s|%%10s|%%10s|%%11s|%%11s|%%8s|%%7s|%%%ds|\n", namelen+2);
fprintf(fproj, fmt,
"cntr",
"ctype1",
"ctype2",
"naxis1",
"naxis2",
"crval1",
"crval2",
"crpix1",
"crpix2",
"cdelt1",
"cdelt2",
"crota2",
"equinox",
"file");
fprintf(fproj, fmt,
"int",
"char",
"char",
"int",
"int",
"double",
"double",
"double",
"double",
"double",
"double",
"double",
"int",
"char");
if((fcorr = (FILE *)fopen(corrimg_file, "w+")) == (FILE *)NULL)
{
fprintf(fstatus, "[struct stat=\"ERROR\", msg=\"Invalid output metadata file: %s\"]\n",
corrimg_file);
exit(1);
}
fprintf(fcorr, "\\datatype=fitshdr\n");
fprintf(fcorr, fmt,
"cntr",
"ctype1",
"ctype2",
"naxis1",
"naxis2",
"crval1",
"crval2",
"crpix1",
"crpix2",
"cdelt1",
"cdelt2",
"crota2",
"equinox",
"file");
fprintf(fcorr, fmt,
"int",
"char",
"char",
"int",
"int",
"double",
"double",
"double",
"double",
"double",
"double",
"double",
"int",
"char");
/************************************************/
/* Read the metadata and process each image WCS */
/************************************************/
namelen = 0;
nimages = 0;
ntotal = 0;
if(iscale >= 0)
sprintf(rfmt, " %%5d %%8s %%8s %%6d %%6d %%10.6f %%10.6f %%10.2f %%10.2f %%11.8f %%11.8f %%8.5f %%7.0f %%10s %%%ds\n", namelen+2);
else
sprintf(rfmt, " %%5d %%8s %%8s %%6d %%6d %%10.6f %%10.6f %%10.2f %%10.2f %%11.8f %%11.8f %%8.5f %%7.0f %%%ds\n", namelen+2);
sprintf(pfmt, " %%5d %%8s %%8s %%6d %%6d %%10.6f %%10.6f %%10.2f %%10.2f %%11.8f %%11.8f %%8.5f %%7.0f p%%%ds\n", namelen+2);
sprintf(cfmt, " %%5d %%8s %%8s %%6d %%6d %%10.6f %%10.6f %%10.2f %%10.2f %%11.8f %%11.8f %%8.5f %%7.0f c%%%ds\n", namelen+2);
while(1)
{
stat = tread();
if(stat < 0)
break;
++ntotal;
strcpy(input.ctype1, tval(ictype1));
strcpy(input.ctype2, tval(ictype2));
input.cntr = atoi(tval(icntr));
input.naxis1 = atoi(tval(ins));
input.naxis2 = atoi(tval(inl));
input.crpix1 = atof(tval(icrpix1));
input.crpix2 = atof(tval(icrpix2));
input.crval1 = atof(tval(icrval1));
input.crval2 = atof(tval(icrval2));
if(mode == CDELT)
{
input.cdelt1 = atof(tval(icdelt1));
input.cdelt2 = atof(tval(icdelt2));
input.crota2 = atof(tval(icrota2));
}
else
{
input.cd11 = atof(tval(icd11));
input.cd12 = atof(tval(icd12));
input.cd21 = atof(tval(icd21));
input.cd22 = atof(tval(icd22));
}
input.epoch = 2000;
strcpy(header, "");
sprintf(temp, "SIMPLE = T" ); stradd(header, temp);
sprintf(temp, "BITPIX = -64" ); stradd(header, temp);
sprintf(temp, "NAXIS = 2" ); stradd(header, temp);
sprintf(temp, "NAXIS1 = %d", input.naxis1 ); stradd(header, temp);
sprintf(temp, "NAXIS2 = %d", input.naxis2 ); stradd(header, temp);
sprintf(temp, "CTYPE1 = '%s'", input.ctype1 ); stradd(header, temp);
sprintf(temp, "CTYPE2 = '%s'", input.ctype2 ); stradd(header, temp);
sprintf(temp, "CRVAL1 = %11.6f", input.crval1 ); stradd(header, temp);
sprintf(temp, "CRVAL2 = %11.6f", input.crval2 ); stradd(header, temp);
sprintf(temp, "CRPIX1 = %11.6f", input.crpix1 ); stradd(header, temp);
sprintf(temp, "CRPIX2 = %11.6f", input.crpix2 ); stradd(header, temp);
if(mode == CDELT)
{
sprintf(temp, "CDELT1 = %11.6f", input.cdelt1 ); stradd(header, temp);
sprintf(temp, "CDELT2 = %11.6f", input.cdelt2 ); stradd(header, temp);
sprintf(temp, "CROTA2 = %11.6f", input.crota2 ); stradd(header, temp);
}
else
{
sprintf(temp, "CD1_1 = %11.6f", input.cd11 ); stradd(header, temp);
sprintf(temp, "CD1_2 = %11.6f", input.cd12 ); stradd(header, temp);
sprintf(temp, "CD2_1 = %11.6f", input.cd21 ); stradd(header, temp);
sprintf(temp, "CD2_2 = %11.6f", input.cd22 ); stradd(header, temp);
}
sprintf(temp, "EQUINOX = %d", input.equinox); stradd(header, temp);
sprintf(temp, "END" ); stradd(header, temp);
if(iequinox >= 0)
input.equinox = atoi(tval(iequinox));
strcpy(input.fname, fileName(tval(ifname)));
if(iscale >= 0)
strcpy(scale, tval(iscale));
if(strlen(input.fname) > namelen)
namelen = strlen(input.fname);
if(debug)
{
printf("Image header to wcsinit():\n%s\n", header);
fflush(stdout);
}
input.wcs = wcsinit(header);
checkWCS(input.wcs, 0);
if(input.wcs == (struct WorldCoor *)NULL)
{
fprintf(fstatus, "[struct stat=\"ERROR\", msg=\"Bad WCS for image %d\"]\n",
nimages);
exit(1);
}
/***************************************************/
/* Check the boundaries of the input image against */
/* the output region of interest */
/***************************************************/
oxpixMin = 100000000;
oxpixMax = -100000000;
oypixMin = 100000000;
oypixMax = -100000000;
/* Check input left and right */
for (j=0; j<input.naxis2+1; ++j)
{
pix2wcs(input.wcs, 0.5, j+0.5, &xpos, &ypos);
convertCoordinates(input.sys, input.epoch, xpos, ypos,
output.sys, output.epoch, &lon, &lat, 0.0);
wcs2pix(output.wcs, lon, lat, &oxpix, &oypix, &offscl);
if(!offscl)
{
if(oxpix < oxpixMin) oxpixMin = oxpix;
if(oxpix > oxpixMax) oxpixMax = oxpix;
if(oypix < oypixMin) oypixMin = oypix;
if(oypix > oypixMax) oypixMax = oypix;
}
pix2wcs(input.wcs, input.naxis1+0.5, j+0.5, &xpos, &ypos);
convertCoordinates(input.sys, input.epoch, xpos, ypos,
output.sys, output.epoch, &lon, &lat, 0.0);
wcs2pix(output.wcs, lon, lat, &oxpix, &oypix, &offscl);
if(!offscl)
{
if(oxpix < oxpixMin) oxpixMin = oxpix;
if(oxpix > oxpixMax) oxpixMax = oxpix;
if(oypix < oypixMin) oypixMin = oypix;
if(oypix > oypixMax) oypixMax = oypix;
}
}
/* Check input top and bottom */
for (i=0; i<input.naxis1+1; ++i)
{
pix2wcs(input.wcs, i+0.5, 0.5, &xpos, &ypos);
convertCoordinates(input.sys, input.epoch, xpos, ypos,
output.sys, output.epoch, &lon, &lat, 0.0);
wcs2pix(output.wcs, lon, lat, &oxpix, &oypix, &offscl);
if(!offscl)
{
if(oxpix < oxpixMin) oxpixMin = oxpix;
if(oxpix > oxpixMax) oxpixMax = oxpix;
if(oypix < oypixMin) oypixMin = oypix;
if(oypix > oypixMax) oypixMax = oypix;
}
pix2wcs(input.wcs, i+0.5, input.naxis2+0.5, &xpos, &ypos);
convertCoordinates(input.sys, input.epoch, xpos, ypos,
output.sys, output.epoch, &lon, &lat, 0.0);
wcs2pix(output.wcs, lon, lat, &oxpix, &oypix, &offscl);
if(!offscl)
{
if(oxpix < oxpixMin) oxpixMin = oxpix;
if(oxpix > oxpixMax) oxpixMax = oxpix;
if(oypix < oypixMin) oypixMin = oypix;
if(oypix > oypixMax) oypixMax = oypix;
}
}
/***************************************************/
/* Check the boundaries of the region of interest */
/* against the input image */
/***************************************************/
/* Check ouput left and right */
for (j=0; j<output.wcs->nypix+1; ++j)
{
pix2wcs(output.wcs, 0.5, j+0.5, &xpos, &ypos);
convertCoordinates(output.sys, output.epoch, xpos, ypos,
input.sys, input.epoch, &lon, &lat, 0.0);
wcs2pix(input.wcs, lon, lat, &oxpix, &oypix, &offscl);
if(!offscl)
{
if(0.5 < oxpixMin) oxpixMin = 0.5;
if(0.5 > oxpixMax) oxpixMax = 0.5;
if(j+0.5 < oypixMin) oypixMin = j+0.5;
if(j+0.5 > oypixMax) oypixMax = j+0.5;
}
pix2wcs(output.wcs, output.wcs->nxpix+0.5, j+0.5, &xpos, &ypos);
convertCoordinates(output.sys, output.epoch, xpos, ypos,
input.sys, input.epoch, &lon, &lat, 0.0);
wcs2pix(input.wcs, lon, lat, &oxpix, &oypix, &offscl);
if(!offscl)
{
if(output.wcs->nxpix+0.5 < oxpixMin) oxpixMin = output.wcs->nxpix+0.5;
if(output.wcs->nxpix+0.5 > oxpixMax) oxpixMax = output.wcs->nxpix+0.5;
if(j+0.5 < oypixMin) oypixMin = j+0.5;
if(j+0.5 > oypixMax) oypixMax = j+0.5;
}
}
/* Check input top and bottom */
for (i=0; i<output.wcs->nxpix+1; ++i)
{
pix2wcs(output.wcs, i+0.5, 0.5, &xpos, &ypos);
convertCoordinates(output.sys, output.epoch, xpos, ypos,
input.sys, input.epoch, &lon, &lat, 0.0);
wcs2pix(input.wcs, lon, lat, &oxpix, &oypix, &offscl);
if(!offscl)
{
if(i+0.5 < oxpixMin) oxpixMin = i+0.5;
if(i+0.5 > oxpixMax) oxpixMax = i+0.5;
if(0.5 < oypixMin) oypixMin = 0.5 ;
if(0.5 > oypixMax) oypixMax = 0.5 ;
}
pix2wcs(output.wcs, i+0.5, output.wcs->nypix+0.5, &xpos, &ypos);
convertCoordinates(output.sys, output.epoch, xpos, ypos,
input.sys, input.epoch, &lon, &lat, 0.0);
wcs2pix(input.wcs, lon, lat, &oxpix, &oypix, &offscl);
if(!offscl)
{
if(i+0.5 < oxpixMin) oxpixMin = i+0.5;
if(i+0.5 > oxpixMax) oxpixMax = i+0.5;
if(output.wcs->nypix+0.5 < oypixMin) oypixMin = output.wcs->nypix+0.5;
if(output.wcs->nypix+0.5 > oypixMax) oypixMax = output.wcs->nypix+0.5;
}
}
if(oxpixMax < oxpixMin) continue;
if(oypixMax < oypixMin) continue;
/* Remove any possible compression extension */
strcpy(ofile, input.fname);
if(strlen(ofile) > 3 && strcmp(ofile+strlen(ofile)-3, ".gz") == 0)
ofile[strlen(ofile)-3] = '\0';
else if(strlen(ofile) > 2 && strcmp(ofile+strlen(ofile)-2, ".Z") == 0)
ofile[strlen(ofile)-2] = '\0';
else if(strlen(ofile) > 2 && strcmp(ofile+strlen(ofile)-2, ".z") == 0)
ofile[strlen(ofile)-2] = '\0';
else if(strlen(ofile) > 4 && strcmp(ofile+strlen(ofile)-4, ".zip") == 0)
ofile[strlen(ofile)-4] = '\0';
else if(strlen(ofile) > 2 && strcmp(ofile+strlen(ofile)-2, "-z") == 0)
ofile[strlen(ofile)-2] = '\0';
else if(strlen(ofile) > 3 && strcmp(ofile+strlen(ofile)-3, "-gz") == 0)
ofile[strlen(ofile)-3] = '\0';
/* Make sure the extension is ".fits" */
if(strlen(ofile) > 5 && strcmp(ofile+strlen(ofile)-5, ".fits") == 0)
ofile[strlen(ofile)-5] = '\0';
else if(strlen(ofile) > 5 && strcmp(ofile+strlen(ofile)-5, ".FITS") == 0)
ofile[strlen(ofile)-5] = '\0';
else if(strlen(ofile) > 4 && strcmp(ofile+strlen(ofile)-4, ".fit") == 0)
ofile[strlen(ofile)-4] = '\0';
else if(strlen(ofile) > 4 && strcmp(ofile+strlen(ofile)-4, ".FIT") == 0)
ofile[strlen(ofile)-4] = '\0';
else if(strlen(ofile) > 4 && strcmp(ofile+strlen(ofile)-4, ".fts") == 0)
ofile[strlen(ofile)-4] = '\0';
else if(strlen(ofile) > 4 && strcmp(ofile+strlen(ofile)-4, ".FTS") == 0)
ofile[strlen(ofile)-4] = '\0';
strcat(ofile, ".fits");
if(iscale >= 0)
{
fprintf(fraw, rfmt,
nimages+1,
output.wcs->ctype[0],
output.wcs->ctype[1],
oxpixMax - oxpixMin + 1,
oypixMax - oypixMin + 1,
output.wcs->crval[0],
output.wcs->crval[1],
output.wcs->crpix[0] - oxpixMin,
output.wcs->crpix[1] - oypixMin,
output.wcs->cdelt[0],
output.wcs->cdelt[1],
output.wcs->rot,
output.epoch,
scale,
ofile);
}
else
{
fprintf(fraw, rfmt,
nimages+1,
output.wcs->ctype[0],
output.wcs->ctype[1],
oxpixMax - oxpixMin + 1,
oypixMax - oypixMin + 1,
output.wcs->crval[0],
output.wcs->crval[1],
output.wcs->crpix[0] - oxpixMin,
output.wcs->crpix[1] - oypixMin,
output.wcs->cdelt[0],
output.wcs->cdelt[1],
output.wcs->rot,
output.epoch,
ofile);
}
fprintf(fproj, pfmt,
nimages+1,
output.wcs->ctype[0],
output.wcs->ctype[1],
oxpixMax - oxpixMin + 1,
oypixMax - oypixMin + 1,
output.wcs->crval[0],
output.wcs->crval[1],
output.wcs->crpix[0] - oxpixMin,
output.wcs->crpix[1] - oypixMin,
output.wcs->cdelt[0],
output.wcs->cdelt[1],
output.wcs->rot,
output.epoch,
ofile);
fprintf(fcorr, cfmt,
nimages+1,
output.wcs->ctype[0],
output.wcs->ctype[1],
oxpixMax - oxpixMin + 1,
oypixMax - oypixMin + 1,
output.wcs->crval[0],
output.wcs->crval[1],
output.wcs->crpix[0] - oxpixMin,
output.wcs->crpix[1] - oypixMin,
output.wcs->cdelt[0],
output.wcs->cdelt[1],
output.wcs->rot,
output.epoch,
ofile);
++nimages;
}
fclose(fraw);
fclose(fproj);
fclose(fcorr);
fprintf(fstatus, "[struct stat=\"OK\", count=\"%d\", total=\"%d\"]\n",
nimages, ntotal);
fflush(stdout);
exit(0);
}
int main(int argc, char **argv)
{
int c;
int args;
int offscl;
int dim1, dim2;
int ix, iy;
int offset;
int debug=0;
int dowcs=1;
int idx=0;
char tbuf[SZ_LINE];
double dval1, dval2;
double dx, dy;
double *dbuf;
struct WorldCoor *wcs;
Fun fun;
/* process switch arguments */
while( (c = getopt(argc, argv, "d")) != -1){
switch(c){
case 'd':
debug = 1;
break;
case 'i':
dowcs = 0;
break;
}
}
/* check for required arguments */
args = argc - optind;
if( args < 1 ){
fprintf(stderr, "usage: %s iname -d -i\n", argv[0]);
fprintf(stderr, "\n");
fprintf(stderr, "where:\n");
fprintf(stderr, " -d\tprint out input and output position values\n");
fprintf(stderr, " -i\tinput values are image x,y (not ra,dec in deg)\n");
fprintf(stderr, "\n");
exit(1);
}
/* exit on gio errors */
setgerror(2);
/* open the input FITS file */
if( !(fun = FunOpen(argv[optind], "r", NULL)) )
gerror(stderr, "could not FunOpen input file: %s\n", argv[optind]);
/* extract and bin the data section into a double float image buffer */
if( !(dbuf = FunImageGet(fun, NULL, "bitpix=-64")) )
gerror(stderr, "could not FunImageGet: %s\n", argv[1]);
/* get required information from funtools structure */
FunInfoGet(fun,
FUN_SECT_DIM1, &dim1,
FUN_SECT_DIM2, &dim2,
FUN_WCS, &wcs,
0);
/* for each line in the contour file ... */
while( fgets(tbuf, SZ_LINE, stdin) ){
/* ignore comments */
if( *tbuf == '#' )
continue;
/* blank lines means reset counter */
if( *tbuf == '\n' ){
fprintf(stdout, "\n");
idx = 0;
continue;
}
/* input contour values: ra, dec in degrees (or image coords if -i) */
if(sscanf(tbuf, "%lf %lf", &dval1, &dval2) != 2){
gerror(stderr, "invalid line in contour file: %s\n", tbuf);
}
/* convert input ra, dec to image x, y */
if( dowcs ){
wcs2pix(wcs, dval1, dval2, &dx, &dy, &offscl);
/* make sure we are not off scale */
if( offscl ){
fprintf(stderr, "warning: wcs position is offscale: %s\n", tbuf);
continue;
}
}
else{
dx = dval1;
dy = dval2;
}
/* convert image values to integers */
ix = (int)(dx+0.5);
iy = (int)(dy+0.5);
/* sanity checks -- must be inside the image */
if( (ix < 1) || (ix > dim1) || (iy < 1) || (iy > dim2)){
fprintf(stderr, "warning: image position off image: %s\n", tbuf);
continue;
}
/* calculate offset into dbuf */
offset = (iy-1)*dim1 + ix-1;
/* write out the index and the pixel value at the image position */
fprintf(stdout, "%d\t%f", idx, dbuf[offset]);
/* debugging info, if necessary */
if( debug ){
fprintf(stdout, "\t %f %f\t%d %d", dval1, dval2, ix, iy);
}
/* finish off line */
fprintf(stdout, "\n");
/* bump to next index */
idx++;
}
/* close output first so that flush happens automatically */
FunClose(fun);
if( dbuf ) free(dbuf);
return(0);
}
int read_file(char *file, struct FitsFile *input, struct CatalogRow *cat)
{
char s[MAXGETS];
FILE *fp;
int i, count, len, line, nobj, status;
int apos[1000];
int alen[1000];
char buf[100];
int offscl;
double x, y;
struct CatalogRow c;
if ((fp = fopen(file, "r")) == NULL) {
fprintf(stderr,"file open error : %s\n",file);
exit(EXIT_FAILURE);
}
line = nobj = 0;
while (fgets(s, MAXGETS, fp) != NULL) {
status = SPACE;
count = 0;
//puts(s);
for (i=0; i<MAXGETS; i++) {
//putc(s[i],stdout);
//printf("i=%d s[i]='%c' count=%d\n",i,s[i],count);
if (s[i]=='\0' || s[i]=='#') {
if (status==WORD) {
alen[count] = len;
count++;
}
break;
}
switch (s[i]) {
case ' ':
case '\t':
if (status==WORD) {
alen[count] = len;
//strncpy(buf,&s[apos[count]],alen[count]);
//buf[alen[count]] = '\0';
//printf("count=%i buf=%s\n",count,buf);
count++;
len = 0;
status = SPACE;
}
break;
default:
if (status==SPACE) {
apos[count] = i;
status = WORD;
}
len++;
}
}
if (count >= NCOLS) {
c.line = line;
strncpy(buf,&s[apos[COL_LON]],alen[COL_LON]);
c.lon = atof(buf);
strncpy(buf,&s[apos[COL_LAT]],alen[COL_LAT]);
c.lat = atof(buf);
strncpy(buf,&s[apos[COL_ERR]],alen[COL_ERR]);
c.err = atof(buf);
wcs2pix(input->wcs, c.lon, c.lat, &x, &y, &offscl);
//printf("lon=%f lat=%f x=%f y=%f offscl=%d\n",c.lon,c.lat,x,y,offscl);
/* 0 if within bounds, else off scale */
if (offscl==0) {
//printf("line=%d lon=%f lat=%f x=%f y=%f offscl=%d\n",c.line,c.lon,c.lat,x,y,offscl);
cat[nobj++] = c;
}
}
//if (line>2) exit(0);
line++;
}
fclose(fp);
return nobj;
}
